NCT04801524.

Study name	NCT04801524
Starting date	7 February 2021
Contact information	UCLA Health Department of Medicine, Quality OfficeWestwood, California, United States, 90095
Methods	Study design: randomised controlled trial Type of publication: trial registration Setting: UCLA health Country: USA Language: English
Intervention	Self‐benefit sub‐arm: participants will be reminded that the vaccine helps protect them from COVID. Prosocial‐benefit sub‐arm: participants will be reminded that the vaccine helps protect their family, friends, and community from COVID. Early access + self‐benefit sub‐arm: participants will be reminded that they have early access to COVID‐19 vaccine and should take the opportunity to protect themselves from COVID. Early access + prosocial‐benefit sub‐arm: participants will be reminded that they have early access to COVID‐19 vaccine and should take the opportunity to protect their family, friends, community from COVID. Fresh start + self‐benefit sub‐arm: participants will be reminded that the vaccine offers the promise of a fresh start and they should take the opportunity to protect themselves from COVID and chart a new path forward. Early access + prosocial‐benefit sub‐arm: participants will be reminded that the vaccine offers the promise of a fresh start and they should take the opportunity to protect their family, friends, community from COVID and help our nation chart a new path forward.
Population	Population: students at UCLA Inclusion criteria: Participants have a mobile phone number or SMS capable phone number in UCLA Health's database; are eligible for receiving the COVID‐19 vaccine at UCLA Health; have not already scheduled an appointment the day before the scheduled time of text message; are at or above 18 years old.
Outcomes	Primaryooutcome First COVID‐19 Vaccine appointment scheduled at UCLA Health [Time frame: 6 days] Secondary outcomes First COVID‐19 Vaccine obtained at UCLA Health [Time frame: 1 month from text message] Time of obtaining the first COVID‐19 vaccine at UCLA Health [Time Ffame: 1 month from text message] First COVID‐19 Vaccine obtained at UCLA Health or any organisation reporting to CAIR [Time frame: 2 months from text message] Time of obtaining the first COVID‐19 at UCLA Health or another location reporting to CAIR [Time frame: 2 months from text message]
Estimated completion date and number of participants	1 January 2022 with 250,000 participants
Notes	Sponsors: University of California, Los Angeles and Carnegie Mellon University COI: NR